"The seizures were made early this week in Auchi and Okada. The illicit drug was loaded in a truck and two buses before our men intercepted them," the official from the NDLEA agency told AFP, requesting anonymity.

He did not disclose the value of the haul but industry sources it could run into several millions of dollars.

In June, the agency seized 80 tonnes of cannabis in its largest ever single haul, in the southwestern city of Ibadan.